﻿using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication2
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string name = UserName.Text;
            string psw = Password.Text;
            string constr = "server=.;uid=xiaocao;psw=123456;database=Student_db";
            SqlConnection con = new SqlConnection(constr);
            string sql = "select * from StudentInfo where stu_name=@name and password=@psw";
            SqlParameter[] pars =
             {
                new SqlParameter("@name",name),
                new SqlParameter("@psw",psw)
            };
            try
            {
                con.Open();
                SqlCommand cmd = new SqlCommand(sql, con);
                cmd.Parameters.AddRange(pars);
                SqlDataReader dr = cmd.ExecuteReader();
                if (dr.Read())
                {
                    Session["username"] = name;
                    Literal1.Text = "登入成功！";
                    Response.Redirect("Home.aspx");
                }
                else
                {
                    Literal1.Text = "登入失败 账号或密码错误！";
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
            finally 
            {
                if (con!=null)
                {
                    con.Close();
                }
            }
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            Response.Redirect("Register.aspx");
        }
    }
}